Smoke-preventing apparatus.



N0.'632,672. Patented se t. 5, I899.

n. H. BURNS.

SMOKE PREVENTING APPARATUS.

(Application filed Mar. 4, 1899.) (No Modal.) 3 Sheets-Sheet I.

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Patented Sept; 5, 1399.

R. H. BURNS.

SMOKE PREVENTING APPARATUS.

(Appfimtinn filed Mar. 4, 1899.)

(No Model.)

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No. 632,672. P31811181 Sept. 5, I899.

R. H. BURNS. SMOKE PREVENTING APPARATUS.

(Applicati'on filed Mar. 4, 1899.) (No Model.) 3 Sheets-Sheet 3.

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Nrrlin STATES PATENT OFFICE.

ROBERT HENRY BURNS, OF NEXV YORK, N. Y.

SMOKE-PREVENTING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 632,672, dated September 5, 18 99.

Application filed March 4,1899. Serial No. 707,778. (No model.)

To all whom it may concern:

Be it known that 1, ROBERT HENRY BURNS, a citizen of the United States, residing in the city of New York, county of Kings, and State of New York, have invented certain new and useful Improvements in Smoke-Preventing Apparatus, of which the following is a speci fication, reference being had to the accompanying drawings.

My invention relates to and has for its special object the improvement of the horizontal tubular boiler and the admission of a supply of atmospheric air or like combustion-assisting gas or medium to the front connection and causing the same to pass'through the lower tubes from front to rear in a direction antagonistic to the movement of the combustion-gases, and thence to reach the combustion-chamberandfurnace. Myspecially-constructed apparatus may, however, be located in any flue or draft-passage as desired.

Certain of my improvements consist in the construction, arrangement, and adaptation of a special chamber, preferably located in the front connection of the horizontal tubular boiler or in any unexposed pocket .of con-. nections or chambers, to receive, contain, and regularly discharge a supply of air or like combustion-assisting medium into said front connection or other combustion-chambers and to pass either through the lower tubes of the boiler or directly into the combustion-spaces.

Other improvements consist in the suspension, hanging, or swinging of the said special chamber to the doors or frames of said connection or chambers, whereby a control of the inward movement of the air, a constant opportunity for examining and cleansing of said special chambers, and also in the front connection a control of outward movement of the products of combustion are attained.

Other improvements consist in the special construction, arrangement, and combination of the several parts, portions, or details comprising the improved apparatus, as hereinafter shown, described, and claimed. The preferred location of an apparatus of this kind is in some part or portion of the flue passages or compartments not exposed to the extreme heat of high-temperatured combustion suflicient to cause a possible burning and destruction of the metal.

In the drawings, Figure 1 represents a sectional elevation of a horizontal tubular boiler and its furnace with an apparatus embodying my improvements applied to its front connection, alsoa second apparatus applied to a cleaning-pocket or entrance at the back connection. Figs. 2'and 3 represent, detail views of an apparatus embodying my improve ments, the same being represented as rigidly attached to a circular connection-door by means of the admission-inlet andassistingstraps at top and bottom. Figs. 4 and 5 represent the same as attached to one of the half doors of a square frame connection, the extension or hanging portion being set at a slight angle to the perpendicular. Figs. 6 and 7 represent the same provided with a hinge or swing-suspension strap attached to the frame or door, whereby its angle of suspension may be varied at Will. Figs. 8 and 9 represent the same provided with a hingestrap or swing suspension from below, variable also at will. Figs. 10 and 11 show illustrative details of hinge-strap or swing-suspension attachment.

In horizontal tubular boiler practice experience shows that the products of combustion coming from the furnace rise within the back connection and pass through the upper rows of tubes, leaving the two or three lower rows practically out of service. It is to take advantage of this feature that I place and use my air-admission chamber as described.

Similar letters of reference designate like parts, portions, or details in all the figures.

Letter A designates the medium-containing chamber, divided into manifold-compartments B and O and connecting or circulation compartments D.

Letter E designates an inlet-nozzle attachment by means of which the air or combustionassisting medium enters naturally or by pressure and by means of which the chamber A as a whole is supported or suspended from the framework or door of some one of the draft compartments or passages of the furnace. I

Letter F designates a wall, door, or framework, to which the chamber A is attached for support. 4

E designates a cap or like means for closing the inlet-nozzle E to prevent, control, or stay the admission of the combustion-assisting medium to chamber A. hen atmospheric air is to be admitted, it may be closed by placing cap E over or partially over the ends of inlet pipe or nozzle E. When pressure of air or combustion-assisting medium is made use of over and above that of the atmosphere, a valve of any Well-known type or design will be necessary. In Fig. 10 a slot e is shown, over which the screw-cap 'E may be wholly or partially run to decrease more or less the opening of slot (2.

C designates exit holes or perforations in the manifold 0. Through these holes or perforations the air or combustion-assisting medium is scattered or passed by pressure or otherwise to mingle with the gases from the fuel for an increased heat development. The several circulation-compartments D are kept apart or separated to form or provide for spaces or passages G, through which the escaping gases or products of combustion may pass, reaching the wh ole heating-surfaces of chamher A and raising the temperature of the admitted air or combustion-assisting medium before being passed out through holes or perforations C for use. \Vhen the chamber A is swung to the angle as shown in Figs. 6 and 8, a partial obstruction of the front connection is effected,and the heated products of combustion coming from the upper tubes are forced more effectively about the exposed surfaces of chamber A, raising the temperature of the contained medium before it passes out. To hinder as far as possible the escaping medium as it exits from holes or perforations C from moving upward or toward the chimney, a plate I may project from the manifold to act as a guide for the assisting medium in the direction of greatest usefulness, as illustrated by the arrows at the front connection end of Fig. l, where the medium is guided to move directly toward the lower tubes of the boiler illustrated. As illustrated in the lower back connection position, the guide-plate is not needed. (See also Figs. at and 8.)

Letter H designates an arm, lever, or line by means of which the chamber A may be placed and kept at any desired working angle.

Letter K designates a strap, eye, or clamp upon which the chamber may swing and by which it is secured'to the supporting-wall, framework, or door. As illustrated in Figs. 10 and 11, an opening is made in the manifoldcompartment, so as to connect and communicatewith one in the hollow inlet-nozzle attachment E, so that inlet-connection is assured, no matter what the angle of chamber A may be.

In the chamber A, as illustrated in Figs. 2, 3, et, 5, 6, and 7, the circulation of air or contained medium is from manifold B to manifold 0, taking advantage of the heating surface exposure of the manifolds and connecting pipes or compartments. In Figs. 8 and 9 the circulation of air or contained medium is into one half portion, to the left, of manifold-compartment 0, up through the associated tube-compartments D, on the left, to manifold-compartment B, to the right, and down the associated compartments D on the right to a second half portion of manifold C, whence it is passed out through exit holes or perforations in said second half portion only, a partition 0 being used to effect the division, as illustrated in Figs. 9 and 11. In such an arrangement of the circulation the manifold C may be divided, as shown in Fig. 11, or the eye-clamp K may be halved, according to choice. By the use of a plurality of these partitions C an increased to-and-fro circulation of the medium may be effected and an increased opportunity provided for the medium to take an increased temperature.

When the suspension or attaching straps K of ordinary style and shape, as shown in Figs. 2 and 3, are used, inlet E may continue through its wall, partition, frame, or door without its binding-nut J to the supply location for the air or combustion-assisting medium. When these-are abandoned and reliance placed upon the inlet-nozzle attachment alone, the chamber A may be readily swung upon the inlet-strap K, as shown in Figs. 6, 8, and 10, upon the center of K, or it may, if desired, be swung upon the center of inletnozzle E, making it adjustable in any direction of swing, or it may be fixed in its position, as illustrated in Figs. 2 and 4, by screwing up on the nuts J on the inlet-pipe E. A plurality of fixed inlet-joints may be made use of, as illustrated in Fig. 5, in which two of the inlet-joints are shown at E.

What I claim as new, and desire to secure by Letters Patent, is

1. In combination with the front connection, and the front connection ends of the lower tubes of a horizontal tubular boiler, an inclosed chamber composed of inlet and outlet manifold compartments and a plurality of connecting circulation-compartments, substantially as and for the purposes set forth.

2. In combination with the lower tubes and front connection doors of a horizontal tubular boiler, an air-receiving chamber composed of inlet and outlet manifold compartments and a plurality of connecting circulation-compartments, and an inlet-nozzle upon which the said air-receiving chamber maybe swung in any direction and to any desired position substantially as and for the purposes set forth.

3. In combination with the lower tubes and front connection doors of a horizontal tubular boiler, an air-receiving chamber composed of inlet and outlet manifold compartments and a plurality of connecting circulation-compartments, a plurality of passages through which the escaping products of combustion pass to reach the chimney, an inlet-nozzle upon which the said air-receiving chamber may swing in any direction and to any desired position, and a guide-plate to control the movement of the admitted air or combustion-assisting medium in its passage to the lower boiler-tubes substantially as set forth.

4. In combination with the draft passages or connections of a furnace, a chamber composed of inlet and outlet manifold compartments and a plurality of circulation-compartments, and a guide-plate to control the movement of the air or combustion-assisting medium after passing from its chamber substantially as and for the purposes set forth.

5. In combination with the draft passages or connections of a furnace, a chamber composed of inlet and outlet manifold compartments and a plurality of circulation-compart- .ments, and provided with a plurality of passages or openings through which the escaping products of combustion may pass to reach the chimney, and an adjusting arm lever or ROBERT HENRY BURNS.

Witnesses:

SPENCER ALDRICH, XVM. H. WEIGHTMAN. 

